<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			// 测试题1
			function A(){
				
			}
			A.prototype.n = 1
			
			var b = new A()
			
			A.prototype = {
				n:2,
				m:3
			}
			
			var c = new A()
			console.log(b.n, b.m, c.n, c.m)
			
			// 测试2
			function F(){}
			Object.prototype.a = function(){
				console.log('a()')
			}
			Function.prototype.b = function(){
				console.log('b()')
			}
			var f = new F()
			f.a()
			f.b()
			F.a()
			F.b()
			console.log(f)
			console.log(Object.prototype)
			console.log(Function.prototype)
			
		</script>
	</body>
</html>
